Two copies on sale from MyComicshop, compare them: on the left, the original, on the right the JC Penney reprint.
Aside from Alicia's different skin tone, if you look at the color blends on the ground (both on the Thing's side and on Alicia's) you’ll see that the old coloring system was "warmer" (done by hand) and the printing has "gaps" in the color ramps, due to printing limitations of the technology. The new computer colored version has smooth gradients, which also do not follow precisely the curve of the original blends, and probably the screen dots are smaller as the quality is better, as ental pointed out. (thumbs u
All this is enough, without even looking at the super-white fresh paper.
They did a great job, anyway.